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SubjectRe: [PATCH v6 01/17] ima: Add IMA namespace support
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On 12/10/21 14:47, Stefan Berger wrote:
> Implement an IMA namespace data structure that gets created alongside a
> user namespace with CLONE_NEWUSER. This lays down the foundation for
> namespacing the different aspects of IMA (eg. IMA-audit, IMA-measurement,
> IMA-appraisal).
>
> Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
> Suggested-by: James Bottomley <James.Bottomley@HansenPartnership.com>
> ---
> include/linux/ima.h | 37 +++++++++++++
> include/linux/user_namespace.h | 4 ++
> init/Kconfig | 10 ++++
> kernel/user.c | 7 +++
> kernel/user_namespace.c | 8 +++
> security/integrity/ima/Makefile | 3 +-
> security/integrity/ima/ima.h | 4 ++
> security/integrity/ima/ima_init.c | 4 ++
> security/integrity/ima/ima_init_ima_ns.c | 32 +++++++++++
> security/integrity/ima/ima_ns.c | 69 ++++++++++++++++++++++++
> 10 files changed, 177 insertions(+), 1 deletion(-)
> create mode 100644 security/integrity/ima/ima_init_ima_ns.c
> create mode 100644 security/integrity/ima/ima_ns.c
>
> diff --git a/include/linux/ima.h b/include/linux/ima.h
> index b6ab66a546ae..f282e40c316c 100644
> --- a/include/linux/ima.h
> +++ b/include/linux/ima.h
> @@ -11,6 +11,7 @@
> #include <linux/fs.h>
> #include <linux/security.h>
> #include <linux/kexec.h>
> +#include <linux/user_namespace.h>
> #include <crypto/hash_info.h>
> struct linux_binprm;
>
> @@ -210,6 +211,42 @@ static inline int ima_inode_removexattr(struct dentry *dentry,
> }
> #endif /* CONFIG_IMA_APPRAISE */
>
> +struct ima_namespace {
> + int avoid_zero_size;
> +};


I moved the structure to security/integrity/ima/ima.h for v7 and added
__randomize_layout to it.

  Stefan

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